Dell PowerEdge 4100 Service Manual - Page 24

Table 1-2. Jumper Descriptions Jumper Description Default Setting EISA EISA Configuration Utility Not installed (utility settings are retained at system boot) VGA Integrated video controller Installed (controller is enabled) PASSWD Password enable/disable Installed (password feature enabled) CRDBIOS Reserved Not installed (reserved; do not change) RSRVD2 Reserved RSRVD1 Not installed (reserved; do not change) 200MHZ Microprocessor speed Installed only if the microprocessor's internal speed is 200 MHz 180MHZ Microprocessor speed Installed only if the microprocessor's internal speed is 180 MHz Interrupt Assignments Table 1-3. Interrupt Assignments IRQ Line Used/Available IRQ0 Generated by system timer IRQ1 Generated by keyboard controller to indicate that keyboard's output buffer is full IRQ2 Generated internally by interrupt controller to enable IRQ8 through IRQ15 IRQ3 and IRQ4 Generated by super I/O controller to indicate that device connected to corresponding serial port requires service (IRQ3 for COM2 or COM4; IRQ4 for COM1 or COM3) IRQ5 Available for use by expansion card unless this IRQ line is used by secondary parallel port IRQ6 Generated by super I/O controller to indicate that diskette drive requires service IRQ7 Generated by super I/O controller to indicate that device connected to parallel port requires service IRQ8 Generated by keyboard controller for each tick of RTC IRQ9 Available for use by expansion card 1-22 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual